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http_server.go
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http_server.go
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package main
import (
"bytes"
"context"
"crypto/tls"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/http"
_ "net/http/pprof"
"os"
"strings"
)
var (
httpLog *log.Logger
httpClient *http.Client
HandlerMap = map[string]HandlerFunc{}
HandlerDomainMap = map[string]HandlerFunc{}
)
type HandlerFunc func(*http.Response, *http.Request, *Output)
type serverHandler struct {
ssl bool
}
func homePage(w http.ResponseWriter, r *http.Request, outlog *Output) {
if r.URL.Path == "/ca" {
buf, err := ioutil.ReadFile(config.RootCA)
if err != nil {
w.WriteHeader(500)
return
}
w.Header().Set("content-type", "application/octet-stream")
w.Header().Set("content-disposition", "attachment; filename=rootCA.pem")
w.Write(buf)
return
}
w.Write([]byte(`<a href="/ca">Install CA certificate</a><br/>`))
w.Write([]byte(`<a href="https://` + config.LocalIP + `">Validation CA</a>`))
w.Write([]byte("Client IP: \t\t" + r.RemoteAddr))
w.Write([]byte("Server IP: \t\t" + config.LocalIP))
w.Write([]byte("Proxy: \t\t" + config.ProxyServer))
}
func (sh *serverHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
outlog := &Output{bytes.NewBuffer(nil), "\t"}
outlog.Println("--------------------------------------------------------------------------------- START")
defer func() {
outlog.Println("--------------------------------------------------------------------------------- END")
Logger.WithField("domain", r.Host).WithField("ip", config.LocalIP).WithField("path", r.URL.Path).Info(outlog.String() + "\n\n")
}()
if r.Host == config.LocalIP {
homePage(w, r, outlog)
return
}
httpPrefix := "http"
if sh.ssl {
// TODO: https 有个死循环...
httpPrefix = "https"
}
outlog.NonPrefixPrintln("URL:\t", httpPrefix+"://"+r.Host+r.RequestURI)
outlog.NonPrefixPrintln("SERVER-SSL:", sh.ssl)
input := bytes.NewBuffer(nil)
io.Copy(input, r.Body)
req, _ := http.NewRequest(r.Method, fmt.Sprintf("%s://%s%s", httpPrefix, r.Host, r.RequestURI), input)
outlog.NonPrefixPrintln("HEAD:S\t ================================")
for k, m := range r.Header {
outlog.NonPrefixPrintln(k, ":\t", strings.Join(m, ","))
req.Header.Set(k, strings.Join(m, "; "))
}
// trace := &httptrace.ClientTrace{
// GotConn: func(connInfo httptrace.GotConnInfo) {
// outlog.NonPrefixPrintln("resolved to: %s", connInfo.Conn.RemoteAddr())
// },
// }
// req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
outlog.NonPrefixPrintln("HEAD:E\t================================")
res, err := httpClient.Do(req)
if err != nil {
outlog.Println("ERROR", err)
return
}
for k, v := range res.Header {
w.Header().Set(k, strings.Join(v, "; "))
}
outlog.Println("remote address:", res.StatusCode)
if fun, ok := HandlerMap[r.URL.Path]; ok {
fun(res, r, outlog)
io.Copy(w, res.Body)
return
}
if fun, ok := HandlerDomainMap[r.Host]; ok {
fun(res, r, outlog)
io.Copy(w, res.Body)
return
}
if config.ShowBody {
outlog.NonPrefixPrintln("BODY:")
buf := bytes.NewBuffer(nil)
io.Copy(buf, res.Body)
outlog.NonPrefixPrintln(buf.String())
if r.Host == "www.baidu.com" {
return
}
w.Write(buf.Bytes())
} else {
io.Copy(w, res.Body)
}
}
func UserDNSDialer(ctx context.Context, network, address string) (net.Conn, error) {
d := net.Dialer{}
//设置自定义DNS地址和端口
log.Println("httpDNSSSSSSSSS;", config.DNS[0])
return d.DialContext(ctx, "udp", config.DNS[0]+":53")
}
func HTTPServer() {
log.Println("https://" + config.LocalIP + ":443")
log.Println("http://" + config.LocalIP + ":80")
go func() {
http.ListenAndServe(":11111", nil)
}()
go func() {
cfg := &tls.Config{
InsecureSkipVerify: true,
GetCertificate: func(info *tls.ClientHelloInfo) (*tls.Certificate, error) {
return fetchCert(info.ServerName, strings.Split(info.Conn.LocalAddr().String(), ":")[0])
},
}
srv := &http.Server{
Addr: ":443",
Handler: &serverHandler{true},
TLSConfig: cfg,
}
err := srv.ListenAndServeTLS("", "")
httpLog.Panic(err)
}()
httpLog = log.New(os.Stdout, "HTTP --> ", log.Ltime|log.Lshortfile)
err := http.ListenAndServe(config.LocalIP+":80", &serverHandler{false})
if err != nil {
httpLog.Panic(err)
}
}